Where Does Injustice: Gods Among Us Go From Here?

Masoud of DualShockers writes:

"It may be a little early to talk about an Injustice: Gods Among Us sequel: hell, we’re still waiting for NetherRealm to give us news on the next installment of the rebooted Mortal Kombat series. But with Injustice: Gods Among Us Ultimate Edition out, and Ed Boon recently hinting at an eventual Injustice sequel, it begs the question: where can they go from here? What kind of sequel could they make? What could the story entail? How could next-gen tech expand on an Injustice sequel?"
(Injustice: Gods Among Us, Injustice: Gods Among Us Ultimate Edition, PS Vita, PS3, PS4, Wii U, Xbox 360, Xbox One)